Desk lamp



FIG. 1 is a front view of a desk lamp according to the present design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a view thereof from an angle between front and side; and,

FIG. 8 is a side view thereof with the head portion rotated about 90°. 

The ornamental design for a desk lamp, as shown and described. 